Oenanthe L.

Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1981, Flora Europaea. Volume 2. Rosaceae to Umbelliferae, Cambridge University Press : 338

33. Oenanthe L. 1

Leaves pinnate or pinnatisect. Sepals acute, persistent. Petals white or pale pink, notched, the outer radiating; apex long, inflexed. Fruit ovoid, cylindrical, obconical or globose; commissure wide. Lateral ridges grooved or thickened, sometimes obscure; vittae solitary.

1 Fruit globose 1. globulosa 1 Fruit not globose 2 Some umbels leaf-opposed; peduncles shorter than rays 3Roots with obovoid tubers 2. lisae 3Roots entirely fibrous 4 Fruit more than 5 mm 12. fluviatilis 4 Fruit less than 4-5 mm 13. aquatica 2 Umbels terminal; peduncles longer than rays 5Partial umbels globose in fruit; fruits sessile 3. fistulosa 5Partial umbels not globose in fruit; some fruits pedicellate

(though pedicels sometimes short and thick) 6 Rays and pedicels not thickened in fruit 7 Lobes of basal leaves ovate or suborbicular 11. crocata 7 Lobes of basal leaves spathulate or linear

8 Root-tubers ovoid, clustered at base of stem

8. peucedanifolia

8 Root-tubers not ovoid, not clustered at base of stem

9 Basal leaves 3-pinnate; styles not more than J as long as fruit 10. banatica

9 Basal leaves 2-pinnate; styles at least | as long as fruit

9. lachenalii 6 Rays and pedicels thickened in fruit 10 Lobes of basal leaves cuneate or ovate; stem solid; roottubers ovoid, distant from the stem

4. pimpinelloides 10 Lobes of basal leaves linear or linear-lanceolate; stem hollow; root-tubers cylindrical or ovoid, near the stem

11 Upper cauline leaves 2-pinnate; lobes setaceous

5. millefolia

11 Upper cauline leaves pinnate; lobes linear or linearlanceolate

12 Root-tubers obovoid; fruit cylindrical or obconical

7. silaifolia

12 Root-tubers cylindrical or fusiform; fruit elliptical

6. tenuifolia